Selector-switch.



J. L. MGQUARRIE. SELECTOR SWITCH.

APPLICATION FILED JULY (V30, 1913.

Patented Dec. 29, '1914 F/.g./ l ssHBBTs-'SHBBTL J. L. MGQUARRIB. SELECTOR SWITCH. APPLICATION FILED JULY 30, 1-913.

1,122,626. Patented 1160.29, 1914.

NIW

W//nesses: y v` 5;, Mge( J. L. MCQUARRIE.

SBLECTQR SWITCH. APPLICATION FILED JULY 30, 1913.

Patented Dec. 29,- 1914.

3 SHEETS-SHEET 3,

, .L e Sv... e@ .W he.

Jarras L. Hagenaars, or ivioivrorainnnw JERSEY, Assrenon Townsmen ELEC- Tmc COMPANY, Aor new YORK, n. Y., Atonronarroiv or ILLINOIS.

orrion.

snrno'roiifswirori.

Liaaeae.

application aied ruig-30, 1913. serial Nc. 782,070.

To all whom it may concern:

Be it known that I, JAMES L. MCQUARRI,

citizen of the United States, residing at Montclair, inthe county of Essex and State off New Jersey, have invented a certain new and useful `Improvement in Selector-- lSwitches, of' which vthe followingl is a full,

clear, concise'.y and texact description. I This invention frelates to a. telephone switching apparatus and is particularly designed for use as a line finder although ob-I viously it is adapted'to be used for other purposes. i

The object of this invention is the provision of a` switch by means of which connection between incoming" and outgoing lines may be effected With great rapidity and' which .will positively insure that the spective view of theupper portion of thev stop rod showing the operating mechanism Referring now to the`drawings,- Figure l represents a 'face view of the operating mechanism of the device; Fig. 2 is a. plan view oi' the same; Fig 3 is a sectional view on the line 3-3 oi Fig. l; Fig. tris a pertlierefior; Figs. 5, and 7 are views of the part shown in Fig. 4 showing the; stop rod in diiierent operated positions;l F ig. 8 is a perspective view showing a pair of stop,

rods lvith the ,stop ringsA thereon and the ro'ds by means of lwhich the'se'rings are actuated; Figs. 9, 10 land l1 are plan views of one of the structures shown in Fig. 8 dvith partebrokenv away showing the rods and rings in different positions; Fig. 12 is a diagrammatic .illustration of the switch and a l h bi1-cuit with 'which it may be employedv ,Referring niv. to the drawings, each ini divdu'al' switching device l briefly described.

is as follows: The incomingA lines extend to terminals on a panel bank. Mounted parallel to the bank and to 'each other is a. plurality of longitudinally movable vshafts or .rods 6, each carrying a set or sets of brushes 5:2 representing outgoing line ter minals.

33 each having a projecting lug #t5 adapted to be placed in a position to intersect the path of a stop lug 46 carried on the corresponding brush shaft Individual to each incoming line is a `magnet 50 and a rod 49.

actuated thereby, whereby its respective ring 33 on the stopI rod of a ,preselected trunk only would be rotated to stop the brush shaft with the brushesfin engagement Awith the terminals ofthe proper incoming In a switch such as herein disclosed, the panel would preferably extend vertically and thel actuating mechanism Would be located either above or below the. panel, the brush 1 f rod and brushes being located opposite the face of the terminal bank. l/Vhile only one set of brushes. and a portion of onesection of terminals are indicated on the-drawing,l

in practice several sets of brushes Amight be carried. by the same brush shaft, each set having'access to a separate section of the terminal bank.l In this case the brushes `would normally be held in retracted or inoperative position by any lsuitable means and only 'the set having access to the terminal section in which the calling lineftermi# nates would be tripped.' This' tripping might be controlled by an electromagnet as' 69 whichn couldl be eithercommonto all the lines terminating in the same section of the panel or individual to each line, as here shown. n a telephone exchange in which this invention is adapted to be used, a plurality of groups of these switching devices would be provided, one switch for each dut* going line, and the corresponding contacts traversed by the brushes of the several' switches o f a'groun ivpuldrepre'sent multi? pled terminals of. the incomingflines Y o Mounted 'parallel and adjacent toA each `of the brush lshafts is a stop rod 7 carrying a pluralityzof rotatable stop rings specificati@ of Leners Patent. Patentes Dec, 29,1914,

' nel form or any desired construction.

Referring now to Fig. 1, 1 and represent supports on which the actuating mechanism of the switch may be mounted. Sew 'cured to these supportsby means of the brackets 3 is a horizontal member 4 of chancured at the upper end of the'members 1 and 2 is a strip 5 through which extends the i' .in addition to lthe gear 14 cairies `a worm gear 15 engaged by the worm 16 driven from a motdr or in any desired manner. Secured to the bar 4 and to a corresponding member 17 is a framework 18 carrying the clutch magnets 19 and 2O.v The armatures 21 and 22 of these magnets are provided with theupwardly extending portions 23 andv 24 carrying the clutchpulleys 25 and 26 respectively. Thus it will be seen that upon eny ergzation of one or the other of these maglso nets, the bar 8 will be clamped between one of the pulleys and a power drum 9 or 10,

whereby the shaft will be driven in one di' ree-tion orthe other according to which of the magnets is energized. The bar 8 is provided with openings 27 Aadapted to be engaged byfa pawl 28 pivoted at 31 and which is held in engagement therewith by the springl 29. .Upon the energization of the down drive clutch magnet 19, this pawl will be retracted by means of a finger 30 on the projection 23 engaging a pin 32 carried by said pawl. The stop royd 7, at the lowc end thereof, extends loosely through ',thesupporting member 4 land is also longitudinally movable. Rotatably mounted on the rod 7 are a plurality of stop rings 33 and spacing sleeves 34, one stop ring being provided for each incoming line.v At the upper and lower extremities of the set of rings is a pair of collars 35, 36 connected by th yoke 437, the function for which will hereinafter appear. Thisv yoke and the rings are prevented from longitudinal movement on the shaft by means of the collars 38 and 39 i, fixed thereto. ln the upper end of the; rod

7 is formed a rack 40 adapted to be engaged v. bv a stepping pawl 41 and a holding pawl 42.' The pawl 41 is carried bythe armature 43 of the electro-magnet A44' Each of the stoprings 33 is provided with a projecting lug 45 which unon rotation-thereof is arranged to be placed ln the path of n stop member 46 ri gidlv secured to the brushjshaft 6. -Each ring also carries at the opposite side thereof a lug 47 (see Figs. .9 to 11) .stop

-jacentto the upper end of the stop rod 7,

adapted to be placed in the line of movement of a projection 48 carried on a longitu,di.

nally movable rod 49 when the rod 7 is eleso that if any rod 49 be a'ctuated, the projections 48 thereon will pass above the lugs 47 on their respective rings 33. OIn pref selected' position, however, the rod 7 is-ele- 4vated one step by means of the magnet 44 and pawl 41 so that if a rod 49 is now actu ated', one of the projections 48 thereon will engage its coperating llug 47 and rotate the lug 45 into the path of the stop member 46 carried by the brush shaft 6 as shown in Fig. 10. 1f now the clutch magnet 20 be energized, the brush shaft will be elevated bymeans of the power drum 10 until the stop member 46 engages the lug 45, when the set of brushes 52 will be brought to` rest on the terminalsl of the proper'line as will hereinafter appear. The energization of theJ magnet 50 need only be momentary as ther rings 33 when once rotated remain in their set position until restored tonormalby the reset yoke 37. Integral with each collar35 to which vthe yoke 37 is secured, is an upwardly projecting finger 53, adapted tov be engaged by a projection 54 on areset rod 55 upon energization of its operating magnet 56. One of these rods 55 and its actui ating ma ynet will `beprovided for each stop rod 7.- ecured to the brush shaft 6, ad-

is anarm '57 (see Figs. 4 to 7) which carries a pawl 58 normally held in operative position by a spring 59. Upon return will then 'be returned to normal by gravity or in any desired manner. Secured to the of the brush shaft to its normal position,

upper end of the rod7 `is a -finger 62 which, v

upon the return of .said rod to-its normal position, is arranged to engage the pawl 58 and cause it to release the pawls 41 and 42 as shown in Fig. 7. Secured to the rod 7,

slightlv belowA the member 5, is a collar 63" which limits the upward movement of theV rod. In the embodiment of the invention riage 6 in a manner to traverse its rgspective 6 "near the upper', end thereof. isla -pair of rows of terminals upon longitudinal displacementfofthe shaft. Secured to the sha ft 1,36

masses Y brushesv 81 'and' 95 arranged" to coperate 'with the intrruptersf 8-{and96 ,for a pur'- pose to be hereinafter described.

' Referring now to'FigglZ, l' will describe briefly a circuit such -as'tha't with which'the switch is adapted to be employed, The e011-, doctors 'G-,l and 65 represent the conductors` of' a line'to a substation A, and the conductor's66 and 67 represent the conductors of a trunk line.' However', it is obvious that this switch is equally ,Well4 adapted for connect'- ing any incoming and outgoing lines.l lVe 'will assun'ie'that the subscriber at substation. A; is initiatin a call" and thatv the switch here disclose is arranged to connect the terminals of the conductors 64 and 65 to the terminal brushes 52 of 'the connecting circuit 66, 67. Vvhen the subscriber 4at A removes his receiver from the hook; a circuit is completedfroin battery 68, throughfconduc-,tor 6-3, substation apparatus at A, conductor'65. relays 69 and 70` in series, to

ground Relays 69 and 70 are energized and' relay @completos a 'locking circuit for itself through.` its armature. 'lliejenergiza- `tion of" relay 70 completes a circuit from battery 71, throughl relay 472, conductor? 3,1

'segment' 74 of the allotter interruptor 75,

brush 76, conductor 77AA magnet 50, conductor 79 and armature of-relay 70 to"ground.

" Both relays areenergized.' The 'energization of magnet 50 is momentary as the arma ture oi relay 7 0 immediately falls ofi.

vHowever, it has effected the'displaceinentof its respectiverod 49 which by engagement of the proiection- 48 with the lug 47 of the corresponding ring has rotated. a luga-5 into the nath of the projection 46 on the brush shaft 6. Relay 79- cornpletes a locking cir'- cuit through its right arniaturel and con- 'tact` conductor 80,' interruptor lbrush 81 and contacting segment 'on the interrupter 82 to ground. Through its left armature it corn pletes acircuit from battery 7i, through the i upedrit'e clutch magnet Q0, whercbv the bar 8 is forced into engagement with the power drum 19 and the'brush shaft is caused tov .move upwardly'. 'As ,the brush shaft 16 mores up,4 the brush 8l trailsA over, segments .and insulated portions of the interruptor' 82,

but as therelay 72 is made slightly sluggis'h, it ren'niins4 energized. When, however, the projection 46engages the lug 45 ofthe rotated ring,lthe' shaft 'will be brought to4 rest 'withl the" brush 81. on on'e of the insu-l lated no1-tions of the interrupte'r 82. Relay 72 will non' be denergiaed andintorrupt the circuit' for'the' power magnet 2.0.' The4 Yshaft. however, will be held in its elevated position by means of the VpaWl- 28.' `'lr he en ergization of the lrelay 7:2 also completed a circuit from lbattery 7l through the'. left armature and contact of relay 72, back 'contact and armature of relay 83, 'and electromagnet le toground, This causes the stop the" lugs 47 are noW positioned above'- the for 7 tu. are its ann upward aap'y Se niet projection 48 on 'the rods'49. When the brushes 52 Contact with 'the-terminals of the conductors 64 and'65, a'circuit Willv be completed from the central battery (not shown) t throughconductor 67, right brush and conf tact, conductor 64,. substation apparatus, conductor 65,'left brush to relay 84, conduc tor 6,6 and back to battery. Relay 84 isvv en ergized Nand completes aprire-uit 'from bat# tery through its left armature for relay 85.l A circuit'is now completed from battery86,

interruptor 87, stepping'rnagnet 88, brush 89, conducting segment 97, 'conductor 90, left varmature'and contact'of relay 85, and

4left contact and' armature *of relay 84 to ground. AMagnet 88 i's energized and -through its armature pawl 91 and ratchet Wheel 92 rotates the shaft 93 one step'. lty

may be here noted that the b'rushes 89, 9-1V and 76 areall carried by the saine shaft 93.` A branch. from the'circuit just traced for the stepping magnet 89. also extendsk from Wire 90, through the brush 95 and conduct ing segment 96 'of the interruptor 8:2 to

ground, the shaft' 6 being now in elevated f position.' Newill irst assume that the'neXl trunk v is idle and. ready to be' selected,V 1WhenV the lbrush 89 arrives 'on the next contact 97, vthe circuit yleading througlra -conlductor corresponding to wire 90 at the next 'trunk Will'be opened in' both its branches and the shaft-93 will stop. ln the lmean- ,time the brush 94 Will have passed over' the contacting segment'98, completing a circuit from battery 99, .conductor vl0() vandrelay 83 lto ground. The rnomentary,` energization of 'relay 83v Will complete a circuit from battery lOl-through contact' and armature of relay 83', to magnet 44 ,which is the preselect magnet of the next trunk. 'Ehetrunk. If a plurality of brush sets are provided, the energization of relay 69 when the subscriber 4removes his lreceiver from vthe hook may be employed to causethe ltripping v out the 'brush vset having access t'o the section of the terminal'banlr in which the call,-

V ing Iline terminates, At'the end of the con# rersation, when the calling subscriber at A hangs up his receiver, the relair 84 will be denergized completing a circuit from' ubat-- terv 102 through relay 103, rightarrnature ,f i

and Contact of relay 85 and contati( Aand right armature of relay 84 to ground., The

energization of. relay 103 closes two circuits, one from battery. 104 for the return clutch magnet 19, whereby vthe holding pawl 28 is retracted andthebrush carriage is' returned to normal position,and one through the reset magnet 56, whereby its corresponding rod 55 is forcedgto the right, causino' the projection 54 thereon to engage the linger 530ithecorresponding reset yoke 3T, thus returning the actuated stop ring 33 to its normal position. The apparatus of the used v sition.

line finder will now be returned to itsnormal position,

will have been elevated to its preselected pol It is toY be understood that the circuits herein described are merely illustrative of the manner in whlch the switch might be brought to' rest termlnals What I'claim is: v 1. In a switch, brushes, a carrlage for each brush, sets of stationary terminals ar ranged to be traversed by each of said brushes, mechanical stops respectively individual to said sets of terminals, and operating means common to a plurality of stops for positioning a stop in the path of one of said carriages whereby a brush will be -on a predetermined set of l2; In a switch, a plurality offsets of brushes, acarriage for each'brush set, a row of stationary terminals arranged to be traversed by'each brush, a plurality of mechanical stops individual to each carriage, means for moving said carriages, and operating means common to a plurality of stops for positioning a stop in the path o f a carriage, whereby the corresponding-brushes .will be brought to rest on predetermined terminals.

3. In a switch, a plurality off sets of brushes, a carriage for each set, a row of stationary terminal sets arranged to be traversed by-each set of brushes, `a` plurality of mechanical stopsindividual to each carriage,

4actuatingdevices common to corresponding stops, and means whereby the operation of lary terminals arranged to be traversed by said brushes,I a mechanical stop foneach set of terminale..V andmeans for selectively powhile the stop rod 7 of the line' nder associated -with the next idle trunk Lisanne sitioning said stops in the path of said carf ringe. v f

6. In a telephone exchange, longitudinally` movable brus shafts, a set of brushes carried by each shaft, rowso stationary terminal sets arranged to be traversed by said sets of brushes respectively, a. plurality of mechanical stops for eachl shaft, said stops being individual to said termina l sets 4 re-v spectively, and means for positionlng one of a single plurality of stops in the path of a brush shaft, whereby the brushes carried by said shaft will be caused to stop on the corresponding set of terminals.

7. In a telephone exchange, sw1tch carrlages, a .set of brushes mounted on each carriage, rows of contact sets arranged to be traversed by said sets of brushes respectively, a pluralityV of rotatable members associated with each of said carriages, each member havinga stop, and means for rotatlng one of a single plurality of said rotatable members to cause its stop to intercept the path of the corresponding carriage.

8. Inatelephone exchange, a circuitstal tionary contact terminals therefor, a second circuit, movable brushes which Vsaid second .c1rcu1tterrn1nates, a carnage for said brushes, a mechanical stop for said carriage, and means actuated upon the establishment of a certain electrical condition in said first 'mentioned circuit for projecting said stop into the pathv of said carriage.

9. In .a switch', -a longitudinally'movable brush shaft, a projection carried thereby, a rod adjacent to` said shaft, a plurality of relatively movable members carried by said rod, stop lugs carried by each of said .movable members, and means for positioning any desired stop lug in jection.

10. In a switch, a longitudinally movable brush support, a projection carried thereby, a member adjacent to said support, a plu-2 .rality of rotatable disks on saidmember, each disk having a lugQand means for rotating said disks, whereb said lugs may be positioned in thel path o said projection.

11. In a switch, a longitudinally movable brush support, a projection carried thereby,

a rod substantially parallel to said support, a plurality of rotatable disks on said rod,

'- each disk having alug and means for selectively rotating said disks, whereby said lugs may be positioned in the path of said projection. l

12. In a telephone exchange, a' plurality `of longitudinally movable brush shafts', a .rod-adjacent to each shaft, a vplurality of movable stop members on each.`rod, actuat ingdevices for positioning saidfstop memebers inthe paths of their respectivey shafts,

the'path of said=pro said actuating devices being commento corresponding stop members, and means whereby said actuating devicesmay be 'operatively associated with a' single plurality of stop members at a time. l

'13. In a telephone exchange; a, plurality of longitudinally movable brush shafts, an adjustable rod adjacent to each shaft, a plurality of movable stop members on each rod,

' actuating devices common to corres ending stop members whereby'they may e posi- 10 tioned in the paths of their respective shafts,

sociated with the stop members of* a single rod at a time.

In .witness whereof, IA hereunto" subscribe 15 myname this 26th day of July A. D., 1913. y 'JAMES L. MCQUARRIE.

Witnesses: v

KATHERiNE LpSTAHL,

ALICE HAZLEY. 

